SANDHI NUGRAHENI; ANNA FITRIAWATI; BAGAS ARDIYANTORO. Optimization And Stability Testing Of Avocado Leaf (*Persea americana*) Extract Soap Formulated With A Combination Of VCO, Palm Oil, And Olive Oil Using The Simplex Lattice Design Method. International Journal of Health Engineering and Technology, [S. l.], v. 5, n. 3, 2026. DOI: 10.55227/ijhet.v5i3.1192. Disponível em: https://www.afdifaljournal.com/journal/index.php/ijhet/article/view/1192. Acesso em: 27 sep. 2026.